128523655

素因数分解:

$5^1\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{389}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 184991040

約数和(自身を除く): 56467385

約数列:

[1, 5, 13, 17, 23, 65, 85, 115, 169, 221, 299, 389, 391, 845, 1105, 1495, 1945, 1955, 2873, 3887, 5057, 5083, 6613, 8947, 14365, 19435, 25285, 25415, 33065, 44735, 65741, 66079, 85969, 116311, 152099, 328705, 330395, 429845, 581555, 760495, 1117597, 1512043, 1977287, 5587985, 7560215, 9886435, 25704731, 128523655]

約数ペア:

[(1, 128523655), (5, 25704731), (13, 9886435), (17, 7560215), (23, 5587985), (65, 1977287), (85, 1512043), (115, 1117597), (169, 760495), (221, 581555), (299, 429845), (389, 330395), (391, 328705), (845, 152099), (1105, 116311), (1495, 85969), (1945, 66079), (1955, 65741), (2873, 44735), (3887, 33065), (5057, 25415), (5083, 25285), (6613, 19435), (8947, 14365)]